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