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