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