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