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