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