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