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