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