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