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