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