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