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