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)(20,26)(21,31)(22,27)(23,25)(28,30)(29,32)(33,34)(35,40)(36,39)(37,41)(38,42)(43,47)(44,46)(45,48) involution — undirected(1,3,6,13)(2,7,8,11)(4,12,15,10)(5,9,16,14)(17,19)(18,24)(20,25)(21,28)(22,29)(23,26)(27,32)(30,31)(33,35,38,36)(34,39,42,40)(37,43,45,44)(41,46,48,47)(2,8)(4,15)(7,11)(10,12)(18,25)(19,26)(21,27)(29,30)(33,35,38,36)(34,40,42,39)(37,43,45,44)(41,47,48,46)(1,3)(2,7)(4,12)(5,14)(6,13)(8,11)(9,16)(10,15)(17,20,23,24)(18,26,25,19)(21,30,27,29)(22,32,31,28)(33,36,38,35)(34,40,42,39)(37,43,45,44)(41,46,48,47)(1,4)(2,9)(3,12)(5,11)(6,15)(7,16)(8,14)(10,13)(17,21,23,27)(18,22,25,31)(19,28,26,32)(20,30,24,29)(33,34)(35,39)(36,40)(37,41)(38,42)(43,46)(44,47)(45,48)(1,5,6,16)(2,10,8,12)(3,9,13,14)(4,11,15,7)(17,22)(18,27)(19,29)(20,28)(21,25)(23,31)(24,32)(26,30)(33,37,38,45)(34,41,42,48)(35,43,36,44)(39,46,40,47)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.