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)(17,18,22,28,40,31,48,45,23,29,42,27,21,26,39,46)(19,30,33,37,25,43,41,38,34,47,32,20,35,36,44,24)(1,3)(2,7)(4,12)(5,14)(6,13)(8,11)(9,15)(10,16)(17,19)(18,24)(20,31)(21,25)(22,41)(23,34)(26,37)(27,36)(28,43)(29,38)(30,45)(32,39)(33,48)(35,40)(42,44)(46,47) involution — undirected(2,8)(7,11)(9,10)(15,16)(17,20,23,37)(18,25,29,35)(19,31,34,26)(21,38,40,24)(22,36,42,43)(27,44,28,41)(30,39,47,48)(32,46,33,45)(1,4,6,5)(2,9,8,10)(3,12,13,14)(7,15,11,16)(17,21,23,40)(18,26,29,31)(19,25,34,35)(20,24,37,38)(22,39,42,48)(27,45,28,46)(30,43,47,36)(32,44,33,41)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.