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