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