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)(19,27,29,40)(20,24)(21,33,35,25)(22,26)(23,30)(28,41,43,48)(31,38)(32,45,44,39)(34,37)(36,42)(46,47)(1,3)(2,6)(4,10)(5,9)(7,12)(8,13)(11,15)(14,16)(17,19,22,29)(18,23,26,37)(20,28,31,43)(21,34,35,30)(24,36,38,47)(25,40,33,27)(32,46,44,42)(39,48,45,41)(3,9)(6,12)(10,15)(13,16)(17,20)(18,24)(19,28)(21,32)(22,31)(23,36)(25,39)(26,38)(27,41)(29,43)(30,42)(33,45)(34,46)(35,44)(37,47)(40,48) involution — undirected(2,7)(6,12)(8,14)(13,16)(19,29)(20,31)(23,37)(24,38)(27,40)(30,34)(32,44)(39,45) involution — undirectedA 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.