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