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