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