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