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