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