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