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