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