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