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