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