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