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