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