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