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