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