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