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