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