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