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