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