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