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