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