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