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