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