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