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