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)(12,16)(13,14)(17,18,22,26,23,27,37,43)(19,28,31,39,32,42,36,24)(20,33,34,48,21,25,35,41)(29,45,46,38,30,44,47,40)(2,5)(6,7)(10,14)(11,12)(17,19,23,32)(18,24,27,39)(20,30,21,29)(22,36,37,31)(25,40,33,38)(26,42,43,28)(34,46,35,47)(41,44,48,45)(1,3,4,8)(2,6,5,7)(9,11,13,12)(10,15,14,16)(17,20,23,21)(18,25,27,33)(19,29,32,30)(22,34,37,35)(24,38,39,40)(26,41,43,48)(28,44,42,45)(31,46,36,47)(9,12,13,11)(10,16,14,15)(17,21,23,20)(18,25,27,33)(19,30,32,29)(22,35,37,34)(24,38,39,40)(26,41,43,48)(28,44,42,45)(31,47,36,46)(20,21)(25,33)(29,30)(34,35)(38,40)(41,48)(44,45)(46,47) 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.