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