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