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