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