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