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