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