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