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