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