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