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