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