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