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