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