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)(17,18,23,27)(19,24,28,32)(20,21,25,30)(22,26,31,29)(34,39)(40,43)(41,46)(47,48)(1,3,6,11)(2,7,5,9)(4,13,14,10)(8,16,12,15)(17,19)(18,24)(20,22)(21,26)(23,28)(25,31)(27,32)(29,30)(33,34)(35,40)(36,43)(37,41)(38,39)(42,47)(44,48)(45,46)(2,5)(7,9)(8,12)(15,16)(19,28)(22,31)(24,32)(26,29)(33,35,38,36)(34,40,39,43)(37,44,45,42)(41,48,46,47)(1,3)(2,7)(4,13)(5,9)(6,11)(8,16)(10,14)(12,15)(17,20)(18,21)(19,22)(23,25)(24,26)(27,30)(28,31)(29,32)(33,34)(35,40)(36,43)(37,41)(38,39)(42,47)(44,48)(45,46) involution — undirected(1,4,6,14)(2,8,5,12)(3,10,11,13)(7,15,9,16)(17,21)(18,25)(19,29)(20,27)(22,24)(23,30)(26,28)(31,32)(33,36,38,35)(34,40,39,43)(37,44,45,42)(41,47,46,48)(1,5,6,2)(3,9,11,7)(4,12,14,8)(10,16,13,15)(17,22)(18,26)(19,20)(21,24)(23,31)(25,28)(27,29)(30,32)(33,37,38,45)(34,41,39,46)(35,42,36,44)(40,47,43,48)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.