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