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