One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,6)(4,11,12,7)(5,8)(9,13,15,16)(10,14)(17,18,23,26)(19,21,25,22)(20,27)(24,29)(28,31)(30,32)(1,3,5,10)(2,6,8,14)(4,9,12,15)(7,13,11,16)(17,19,22,18,23,25,21,26)(20,27,28,24,30,32,29,31)(1,4)(2,7)(3,9)(5,12)(6,13)(8,11)(10,15)(14,16)(17,20)(18,24)(19,27)(21,29)(22,28)(23,30)(25,32)(26,31) involution — undirected(17,21,23,22)(18,25,26,19)(20,28,30,29)(24,27,31,32)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.