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