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