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