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