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