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