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