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