One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,5)(7,8)(9,10)(11,15)(12,16)(13,14)(17,18,22,28,23,29,21,27)(19,30,32,40,33,43,37,24)(20,26,34,41,35,42,36,25)(31,38,45,47,46,48,44,39)(2,5)(6,8)(10,14)(11,12)(17,19,23,33)(18,24,29,40)(20,31,35,46)(21,32,22,37)(25,38,41,48)(26,39,42,47)(27,30,28,43)(34,44,36,45)(1,3,4,7)(2,6,5,8)(9,11,13,12)(10,15,14,16)(17,20)(18,25)(19,31)(21,34)(22,36)(23,35)(24,38)(26,27)(28,42)(29,41)(30,39)(32,44)(33,46)(37,45)(40,48)(43,47)(9,12,13,11)(10,16,14,15)(17,20)(18,26)(19,31)(21,36)(22,34)(23,35)(24,39)(25,27)(28,41)(29,42)(30,38)(32,45)(33,46)(37,44)(40,47)(43,48)(10,14)(15,16)(17,21,23,22)(18,27,29,28)(19,32,33,37)(20,34,35,36)(24,30,40,43)(25,26,41,42)(31,44,46,45)(38,39,48,47)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.