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