One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,6)(3,7,4,8)(9,10,15,22)(11,16,28,42)(12,18,32,47)(13,19,37,50)(14,21,38,20)(17,31,45,30)(23,53,55,43)(24,39,57,63)(25,40,58,66)(26,51,27,41)(29,46,60,68)(33,48,59,65)(34,44,61,69)(35,52,36,49)(54,64,71,67)(56,62,70,72)(2,6)(7,8)(9,11)(10,16)(12,24)(13,33)(14,26)(15,28)(17,43)(18,39)(19,48)(20,41)(21,51)(22,42)(23,31)(25,36)(27,38)(29,54)(30,55)(32,57)(34,56)(35,58)(37,59)(40,49)(44,62)(45,53)(46,64)(47,63)(50,65)(52,66)(60,71)(61,70)(67,68)(69,72) involution — undirected(1,3,5,4)(2,7,6,8)(9,12,14,30,15,32,38,31)(10,17,20,18,22,45,21,47)(11,23,26,24,28,55,27,57)(13,29,35,34,37,60,36,61)(16,39,41,53,42,63,51,43)(19,44,49,46,50,69,52,68)(25,54,33,56,58,71,59,70)(40,62,65,64,66,72,48,67)(1,3,5,4)(2,7,6,8)(9,12)(10,18)(11,24)(13,34)(14,30)(15,32)(16,39)(17,21)(19,44)(20,45)(22,47)(23,27)(25,54)(26,55)(28,57)(29,36)(31,38)(33,56)(35,60)(37,61)(40,64)(41,53)(42,63)(43,51)(46,49)(48,62)(50,69)(52,68)(58,71)(59,70)(65,72)(66,67)(1,4,5,3)(2,8,6,7)(9,13)(10,19)(11,25)(12,29)(14,35)(15,37)(16,40)(17,44)(18,46)(20,49)(21,52)(22,50)(23,54)(24,56)(26,33)(27,59)(28,58)(30,34)(31,61)(32,60)(36,38)(39,62)(41,65)(42,66)(43,67)(45,69)(47,68)(48,51)(53,64)(55,71)(57,70)(63,72)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.