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