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