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