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