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