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