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