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