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