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