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