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