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