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