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