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