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