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