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