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