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)(17,18,23,29)(19,30,35,42)(20,26,38,25)(21,28,22,27)(24,33,43,34)(31,47,36,41)(32,40,48,44)(37,45,39,46)(9,10)(11,15)(12,14)(13,16)(17,19,23,35)(18,24,29,43)(20,36,38,31)(21,34,22,33)(25,44,26,40)(27,30,28,42)(32,37,48,39)(41,46,47,45)(2,5)(6,8)(9,11,12,16)(10,13,14,15)(17,20)(18,25)(19,31)(21,39)(22,37)(23,38)(24,40)(26,29)(27,46)(28,45)(30,41)(32,33)(34,48)(35,36)(42,47)(43,44)(1,3,4,7)(2,6,5,8)(11,16)(13,15)(17,20)(18,26)(19,32)(21,37)(22,39)(23,38)(24,41)(25,29)(27,46)(28,45)(30,40)(31,33)(34,36)(35,48)(42,44)(43,47)(10,14)(13,15)(17,21,23,22)(18,27,29,28)(19,33,35,34)(20,37,38,39)(24,42,43,30)(25,45,26,46)(31,48,36,32)(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.