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)(19,28)(20,25)(21,26)(22,36)(23,27)(24,32)(29,42)(30,43)(31,38)(33,39)(34,41)(35,40)(37,45)(44,48)(46,47)(9,10)(11,14)(12,13)(15,16)(17,19,21,31,23,30,22,32)(18,24,36,43,27,38,26,28)(20,29,35,46,34,44,33,45)(25,37,39,48,41,47,40,42)(2,5)(6,8)(10,13)(14,16)(17,20,23,34)(18,25,27,41)(19,29,30,44)(21,35,22,33)(24,37,38,47)(26,40,36,39)(28,42,43,48)(31,46,32,45)(1,3,4,7)(2,6,5,8)(9,11)(10,14)(12,15)(13,16)(19,30)(24,38)(28,43)(29,44)(31,32)(37,47)(42,48)(45,46)(11,15)(14,16)(17,21,23,22)(18,26,27,36)(19,31,30,32)(20,33,34,35)(24,28,38,43)(25,39,41,40)(29,45,44,46)(37,48,47,42)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.