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