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