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