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