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