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