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