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