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