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