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