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