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