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