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