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