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