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