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