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