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