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