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