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