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