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