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