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