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