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