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