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