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