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