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