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