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