One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,6)(5,7)(9,10)(11,17)(12,26)(13,31)(14,20)(15,35)(16,21)(18,29)(19,33)(22,43)(23,53)(24,40)(25,42)(27,38)(28,44)(30,45)(32,48)(34,49)(36,41)(37,46)(39,54)(47,56)(50,63)(51,64)(52,66)(55,65)(57,60)(58,72)(59,67)(61,69)(62,68)(70,71) involution — undirected(1,3,5,4)(2,6,7,8)(9,11)(10,17)(12,27)(13,23)(14,24)(15,36)(16,25)(18,43)(19,47)(20,40)(21,42)(22,29)(26,38)(28,59)(30,51)(31,53)(32,54)(33,56)(34,55)(35,41)(37,52)(39,48)(44,67)(45,64)(46,66)(49,65)(50,60)(57,63)(58,61)(62,71)(68,70)(69,72)(1,4,5,3)(2,6,7,8)(9,12)(10,18)(11,22)(13,28)(14,29)(15,37)(16,30)(17,38)(19,44)(20,45)(21,46)(23,50)(24,51)(25,52)(26,35)(27,36)(31,57)(32,60)(33,62)(34,61)(39,63)(40,43)(41,66)(42,64)(47,70)(48,69)(49,68)(53,67)(54,58)(55,71)(56,59)(65,72)(9,13,16,34)(10,19,21,48)(11,23,25,55)(12,28,30,61)(14,33,15,32)(17,39,42,47)(18,44,46,69)(20,49,35,31)(22,50,52,71)(24,56,36,54)(26,57,45,68)(27,58,51,59)(29,62,37,60)(38,63,64,70)(40,53,41,65)(43,67,66,72)(2,7)(6,8)(9,14,16,15)(10,20,21,35)(11,24,25,36)(12,29,30,37)(13,32,34,33)(17,40,42,41)(18,45,46,26)(19,31,48,49)(22,51,52,27)(23,54,55,56)(28,60,61,62)(38,43,64,66)(39,65,47,53)(44,57,69,68)(50,58,71,59)(63,72,70,67)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.