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