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