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