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