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