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