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