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