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