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