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