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