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)(17,18,21,24,20,22,28,31)(19,25,27,30,26,32,29,23)(33,34,38,40,37,41,36,42)(35,39,43,48,45,46,44,47)(1,3,5,11)(2,6,8,9)(4,10,12,16)(7,13,14,15)(18,22)(23,30)(24,31)(25,32)(33,35,38,43,37,45,36,44)(34,39,40,48,41,46,42,47)(4,12)(7,14)(10,16)(13,15)(17,19)(18,23)(20,26)(21,29)(22,30)(24,32)(25,31)(27,28)(34,40)(35,43)(36,38)(39,46)(41,42)(44,45) involution — undirected(1,4,5,12)(2,7,8,14)(3,10,11,16)(6,13,9,15)(18,22)(19,26)(24,31)(27,29)(34,41)(39,46)(40,42)(47,48)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.