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