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