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