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