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