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