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