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