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