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