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