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