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