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