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