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