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