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