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