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