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