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