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