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