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