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