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