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)(19,28,32,45)(20,25,33,40)(21,26,22,37)(24,30,39,31)(29,44,34,48)(35,42,36,43)(38,47,41,46)(1,3)(2,5)(4,8)(6,7)(9,10,12,13)(11,15,16,14)(20,33)(25,40)(29,34)(35,36)(38,41)(42,43)(44,48)(46,47)(10,13)(14,15)(17,19,22,31,23,32,21,30)(18,24,26,28,27,39,37,45)(20,34,35,47,33,29,36,46)(25,41,43,48,40,38,42,44)(2,6)(5,7)(17,20,23,33)(18,25,27,40)(19,29,32,34)(21,36,22,35)(24,38,39,41)(26,43,37,42)(28,44,45,48)(30,47,31,46)(3,8)(5,7)(9,11,12,16)(10,14,13,15)(17,21,23,22)(18,26,27,37)(19,30,32,31)(20,35,33,36)(24,28,39,45)(25,42,40,43)(29,46,34,47)(38,48,41,44)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.