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