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