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