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