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