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