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