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