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