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