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