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