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