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