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