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