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