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