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