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