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