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