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