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