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