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