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