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