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