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)(19,28)(20,33,37,25)(21,38)(22,26)(23,27)(24,30)(29,45,47,41)(31,43)(32,40)(34,39,46,48)(35,42,36,44)(1,3)(2,6)(4,12)(5,10)(7,9)(8,16)(11,13)(14,15)(17,19,23,31)(18,24,27,40)(20,34,37,46)(21,32,22,30)(25,41,33,45)(26,43,38,28)(29,35,47,36)(39,44,48,42)(2,7)(4,13)(11,12)(14,16)(17,20)(18,25)(19,29)(21,36)(22,35)(23,37)(24,39)(26,44)(27,33)(28,45)(30,34)(31,47)(32,46)(38,42)(40,48)(41,43) 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.