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