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