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