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