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