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