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