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