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