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