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