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