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