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