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