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