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