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