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