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