One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,9,5,8,14,16)(3,10,12,13,11,7,15,4)(17,18,22,27,23,26,39,28)(19,29,33,42,31,47,34,48)(20,35,21,37,36,25,40,45)(24,41,43,30,44,38,46,32)(1,3)(2,7)(4,9)(5,11)(6,12)(8,10)(13,16)(14,15)(17,19,23,31)(18,24,26,44)(20,30,36,32)(21,38,40,41)(22,33,39,34)(25,42,35,48)(27,43,28,46)(29,45,47,37)(1,4,6,10,5,13,14,7)(2,3,9,12,8,11,16,15)(17,20,22,21,23,36,39,40)(18,25,27,45,26,35,28,37)(19,30,33,38,31,32,34,41)(24,42,43,47,44,48,46,29)(3,11)(4,13)(7,10)(12,15)(18,26)(19,31)(25,35)(27,28)(30,32)(33,34)(37,45)(38,41) 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.