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