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