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