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