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