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