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