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